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  • Observation of D s + → p n ...
    Achasov, M. N.; Ahmed, S.; Amoroso, A.; Bai, J. Z.; Bennett, D. W.; Bennett, J. V.; Cai, X.; Calcaterra, A.; Chai, J.; Chen, P. L.; Dai, H. L.; Dbeyssi, A.; De Mori, F.; Ding, Y.; Dong, M. Y.; Duan, P. F.; Farinelli, R.; Fritsch, M.; Gao, Q.; Gao, Z.; Greco, M.; Gu, M. H.; Guo, A. Q.; Guskov, A.; Harris, F. A.; He, K. L.; Heng, Y. K.; Huang, G. S.; Huang, X. T.; Huang, Z. L.; Ji, Q.; Jin, Y.; Ke, B. C.; Kurth, M.; Li, Cheng; Li, G.; Li, J. C.; Li, Q. Y.; Li, X. L.; Liao, L. Z.; Lin, D. X.; Liu, B.; Liu, C. X.; Liu, D. Y.; Liu, F. H.; Liu, Feng; Liu, K.; Liu, Q.; Liu, S. B.; Long, Y. F.; Lou, X. C.; Lu, H. J.; Lu, Y.; Lusso, S.; Ma, M. M.; Ma, X. N.; Mangoni, A.; Meng, Z. X.; Mitchell, R. E.; Mo, Y. J.; Muchnoi, N. Yu; Nefedov, Y.; Olsen, S. L.; Pan, Y.; Patteri, P.; Qiao, C. F.; Qin, Z. H.; Rashid, K. H.; Savrié, M.; Shan, X. Y.; Shao, M.; Shen, P. X.; Sun, S. S.; Sun, Y. K.; Tang, C. J.; Uman, I.; Wang, B. L.; Wang, D. Y.; Wang, L. S.; Wang, Z. G.; Weber, T.; Wiedner, U.; Xiao, D.; Xie, Y. G.; Xu, X. P.; Yan, W. B.; Yan, W. C.; Yang, H. J.; Zafar, A. A.; Zhang, J.; Zhang, J. L.; Zhang, K.; Zhang, T. J.; Zhang, Y.; Zhang, Z. Y.; Zhao, J. Z.; Zhao, Lei; Zhao, T. C.; Zhao, Y. B.; Zhu, A. N.

    Physical review. D, 02/2019, Letnik: 99, Številka: 3
    Journal Article

    The baryonic decay D$+\atop{s}$→p$\overline{n}$ is examined, and the corresponding branching fraction is measured to be (1.21 ± 0.10 ± 0.05 ) × 10-3 , where the first uncertainty is statistical and second systematic. The data sample used in this analysis was collected with the BESIII detector operating at the BEPCII e+e- double-ring collider with a center-of-mass energy of 4.178 GeV and an integrated luminosity of 3.19 fb-1 . The result corroborates the previous measurement by the CLEO Collaboration and is of greatly improved precision. This result will improve our understanding of the dynamical enhancement of the W-annihilation topology in the charmed meson decays.